Helix Ci5 W200FM-S3

Helix Ci5 W200FM-S3 – 8″ / 200 mm advanced 3 Ω woofer

The Ci5 W200FM-S3 is an 8″ woofer from the HELIX COMPOSE i5 series, positioned between the i7 and i3 lines for listeners who want genuine hi-fi sound. Its 3 Ω design is matched to HELIX and MATCH amplifiers for higher efficiency and sound pressure. It delivers controlled bass together with a wide midrange, so it can serve as the midbass in a 2-way system or as a dedicated woofer in a 3-way system.

The silicon-coated paper cone is stiff, light and well damped, while an aluminium dust cap reduces partial vibrations at the cone centre and refines the upper midrange. Despite its compact outer diameter, it offers the cone area of a typical 8″ chassis. A 35 mm voice coil, a powerful magnet system with low resonance frequency and a glass-bead reinforced polymer basket round off the design; its technical data were measured and verified with the KLIPPEL Analyzer System.

Key Features

• Advanced 8″ woofer: 200 mm driver with strong sound performance and flexible physical integration
• 3 Ω technology: high efficiency for maximum amplifier output with HELIX and MATCH amplifiers
• Silicon-coated paper cone: combines a wide-band response with deep, controlled bass while damping unwanted resonances
• 2-way and 3-way capable: usable as midbass in 2-way systems or as dedicated woofer in 3-way systems
• Aluminium dust cap: reduces centre break-up and optimises the upper-midrange response
• 35 mm voice coil: for minimal thermal compression and high power handling
• Compact chassis, full cone area: compact outer diameter with the cone area of a typical 200 mm driver
• Powerful magnet system: generous linear excursion and a low resonance frequency
• Glass-bead reinforced polymer basket: a high-tech polymer composite that is rigid, rings less, avoids flux modulation, copes well with heat and allows a more compact basket
• ProConnect terminal: automotive-grade, interlocking terminal with reverse-polarity protection; accepts standard speaker cable or flat plugs via the optional WireKits and withstands high electrical and mechanical stress
• KLIPPEL-verified data: technical data measured and verified with the KLIPPEL Analyzer System
• FlexMount200 ready: designed for optional car-specific FlexMount200 adaptor rings and WireKits

Drivers & Construction

• Cone: paper with silicon coating
• Dust cap: aluminium
• Voice coil: 35 mm diameter, 15.6 mm winding height
• Basket: polymer composite reinforced with glass beads
• Surround: specially shaped rubber surround
• Terminal: ProConnect (conventional speaker cable, flat-plug adaptor cables or WireKits)
• Delivered as: pair (2 × Ci5 W200FM-S3)

Acoustic Performance

• Power handling: 125 W RMS / 175 W max
• Impedance: 3 Ω (DC resistance 3.2 Ω)
• Sensitivity: 93 dB @ 2.83 V / 1 m; 89 dB @ 1 W / 1 m
• Frequency response: 30 Hz – 8,450 Hz (acc. to IEC 60268-23)
• Thiele/Small: Fs 57.1 Hz, Qms 3.74, Qes 0.84, Qts 0.68, Vas 21.7 l, Cms 344 µm/N, Bl 5.6 Tm, Sd 211 cm², Mms 22.7 g, Rms 2.16 kg/s
• Excursion: Xlin ±5.5 mm (82 % Bl), max. mechanical excursion ±12.7 mm

Installation Notes

• Outer diameter: 195 mm / 7.68″
• Installation diameter: 173.5 mm / 6.83″
• Installation depth: 65.8 mm / 2.59″
• FlexMount200: car-specific CFMK200 adaptor rings are listed as compatible accessories
• Other accessories named: WireKits and CiA SG200

Technical Specifications

Measured and verified using the KLIPPEL^® Analyzer System

Scope of Delivery

2 x Ci5 W200FM-S3
2 x Mounting material